參數(shù)資料
型號(hào): LXP730LE
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁(yè)數(shù): 34/70頁(yè)
文件大小: 1007K
代理商: LXP730LE
LXP730
Multi-Rate DSL Framer
34
Datasheet
Figure 11. Generic PCM Interface Timing
Table 11. Generic PCM Bus Interface Timing Specifications (See Figure 11)
Parameter
Sym
t
CP1
t
CP2
Min
Typ
1
Max
Unit
Test Conditions
PCLK period
122
3906
ns
PCLK duty cycle input
40
60
%
PCLK duty cycle output
(MCLK)
50
%
PCLK duty cycle output
(ADPLL)
See Note 2
PDO delay time
t
DO
t
SU
t
HT
t
FSU
t
FHT
t
FPW
80
ns
PDI setup time
20
ns
PDI hold time
10
ns
PFRM setup time
20
ns
PFRM hold time
10
ns
PFRM pulse width
1
tcp
1. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
2. UI Jitter = PCLK frequency
÷
MCLK frequency.
PCLK
1
PDI
PFRM
PDO
t
DO
t
SU
PCLK
2
t
CP1
t
CP2
t
CH1
t
CL1
t
CL2
t
CH2
t
FSU
t
HT
t
FHT
t
FPW
NOTES:
PCLK
1
= 1x clock, PCLK
2
= 2x clock.
Clock sampling edges and frame pulse polarity are programmable.
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